Yeah, I'm avoiding getting a new single speed freewheel and respacing/dishing for now (until the summer when I have more time). To get a quick conversion, I want to spin off the old freewheel, knock off the 4 of the 5 cogs, space w/ spacers or pvc to get a good chainline and be done with it. Any knowledge on knocking off the cogs on this freewheel is much appreciated as well as any knowledge on pvc pipe spacing or spacer compatability for this freewheel.

Also, I know it can be done as Mr. Brown has done it:

"The freewheel is an old discarded Sun Tour "Perfect" 5 speed unit, with 3 of the sprockets removed and replaced with spare spacers."

I just need to know how.